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The present invention consists of a controller unit that tracks the location and heading of airliners within range of an airport. The controller is also connected to a series of light emitting signage systems (LESS) mounted on structures with relatively unobstructed views of likely aircraft positions. These structures include building roofs, parking lot light poles, etc. The controller configures the LESS to rotate and change their orientation to present text and graphical images to the passengers on the tracked airliner. In addition, the controller communicates orientation, rotation and signage settings to the light emitting devices to provide for effective visualization of messages at a wide variety of distances and angles between emitters and airliner locations.

Advantages to using this solution include the ability to change messages in real time, and display messages during day, night, or reduced visibility lighting conditions. Further advantages to this solution are the ability to display messages to aircraft occupants at great ranges from the signage systems by stretching images across multiple display elements over a wide geographical area.

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The controller system consists of a processing computer and network interface to allow it to communicate with processes that set the message, as well as the LESS. The controller provides a set of interfaces such as a web page or other human computer interaction system to allow the setting of messages for average distances of aircraft to signage components. A process can set messages of various lengths or content based on how far the aircraft is from the average distance of the signage units.

Figure 1 shown below shows the overall process flow of the signage system

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Figure 2 shown below is an example of what an aircraft passenger would see on approach to Chicago O'Hare airport with many of the described signage systems installed on the roofs of buildings in downtown Chicago.

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The images at time positions 0, 4, and 8 seconds show the same message with the signage systems changing elevation and rotation of the light matrix board to provide the most direct path between the aircraft and the geometrical plane of the light matrix board. As the aircraft moves in relation to the buildings, the controller described above and in figure 1 determines the appropriate rotation and elevation angles for each signage element and commands their change in values to match the position of...